Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Recovery of native fish in Zealandia

Recovery of native fish in Zealandia

February 28, 2013

Another step on the way to restoring Wellington’s Zealandia, as closely as possible, to its pre-human state has been achieved with the eradication of introduced fish from its upper waterways.

“We’ve had great success in controlling pest mammals but this operation to restore our freshwater ecosystem had been on our wish-list for many years so we’re delighted with the results” says Zealandia’s Conservation Manager, Raewyn Empson.

The operation, begun in 2011 in collaboration with DOC, was designed to see if using a naturally-occurring chemical, called rotenone, in flowing water would completely remove introduced trout and improve native freshwater fauna populations.

“A spectacular recovery of native freshwater fauna and continued absence of trout is strong evidence that trout have been eradicated from the upper Karori reservoir and streams” says David Moss from the Department of Conservation (DOC).

“Before the operation there were a few big banded native kōkopu, very few whitebait and hundreds of trout in the streams,” said Mr Moss. Results from fish sampling since the operation in February 2011 confirm trout have been eradicated, and show a dramatic increase in the number of whitebait and now juvenile banded kōkopu and kōura (freshwater crayfish).

With the confirmed absence of trout, Zealandia can now plan to introduce other native fish species into the safer reservoir and streams.

“This breakthrough means we can now start planning to enhance the recovery of the upper reservoir and its tributaries by transfers of other native fish - such as the threatened giant kōkopu” says Empson.

Further information:

-The fish toxin rotenone has been used in New Zealand for a number of years to remove pest fish from lakes and ponds. Eradication of introduced fish from streams is a “first” for New Zealand.

- Brown trout were introduced into New Zealand in 1867 as a sports fish. They compete with adult banded kōkopu and eat the juvenile stage whitebait, as well as invertebrates like kōura.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

 

PARLIAMENT TODAY:

  • Week in Parliament 22-05-15
  • Saturday Sitting
  • House Rises At Midnight
  • Telco Levy Bill Passes
  • Telco Levy Bill Completes First Reading
  • Social Housing Bill Passes Under Urgency

  • Labour Party: McCully Doesn’t Deny Bribe In Saudi Sheep Scandal

    “In Parliament today I asked Murray McCully directly: Why is he the first Minister in history to back a multi-million dollar facilitation arrangement which in other jurisdictions is called a bribe? says Labour’s Export Growth and Trade spokesperson ... More>>

    ALSO:

    Welfare: Closure Of Relationships Aotearoa

    The Aotearoa New Zealand Association of Social Workers (ANZASW) Chief Executive Lucy Sandford-Reed is concerned about the closure of a national service which provides a wide range of services to rural and urban communities throughout New Zealand. More>>

    ALSO:

    TPPA: University Of Auckland Warns Of Negative TPP Impact

    The University of Auckland May 20, 2015 University of Auckland Warns of Negative TPP Impact With the Trans Pacific Partnership (TPP) negotiation drawing to a close, the University of Auckland has expressed serious concerns about its potential implications. ... More>>

    NZ Flag: Flag Referendum Gets Hit Hard In New Poll

    The latest Campbell Live text poll confirms it is time for the Prime Minister to listen to the public and shelve his flag referendum, says the New Zealand First Leader Rt Hon Winston Peters. More>>

    Gordon Campbell: The Government’s Belated Moves On Property Speculation

    Is it a property tax on capital gains or a capital gains tax on property? The Jesuitical distinctions in the government’s spin about its latest moves on property speculators are all about whether the government can claim that it jumped, or confess that it ... More>>

    Grant Robertson:
    Key Can’t Just Be Prime Minister For Parnell

    John Key must show New Zealanders in next week’s Budget that he is more than the Prime Minister for Parnell, and is also the Prime Minister for Pine Hill, Putararu and Palmerston North, Labour’s Finance spokesperson Grant Robertson says. In a ... More>>


    Labour Party: More Regional Jobs Go In Corrections Reshape

    News that 194 Corrections staff are to lose their jobs will have ramifications not only for them and their families but for the wider community, Labour’s Corrections spokesperson Kelvin Davis says. Prison units at Waikeria, Tongariro and Rimutaka ... More>>

    ALSO:

  • NZ First - Prison Job Losses to Send Money Offshore
  • TPPA: ‘Team Obama’ Regroups On Fast Track, Still Not Deliverable

    ‘After yesterday’s stinging and unexpected defeat for the Obama administration’s attempt to advance Fast Track legislation in the US Senate, Senate leaders have worked up a compromise they think will get them past this blockage’, according to Auckland ... More>>

    NZ Government: 5,500 More Doctors And Nurses In Our Hospitals

    Health Minister Jonathan Coleman says a record number of doctors and nurses are working in District Health Boards across the country. More>>

    Controller and Auditor General: Katherine Rich Conflict of Interest Decision

    We are writing to you about a matter that has been raised with us by members of the public. More>>

    ALSO:

    Budget 2015: Andrew Little On The 2015 Budget

    Speaking to the Chamber of Commerce, the Labour opposition leader attacked the government’s approach to economic issues facing New Zealand. He said they have been “more than reckless in their complacency” and “the next week’s budget will do nothing ... More>>

    Defence Force: NZDF Building Partner Capacity Mission Personnel In Iraq

    NZDF Building Partner Capacity Mission Personnel in Iraq The New Zealand Defence Force Building Partner Capacity training mission contingent is in place at Taji Military Complex in Iraq. The Chief of Defence Force Lieutenant General Tim Keating says the ... More>>

    PM Press Conference: ACC Levy Cuts Announced

    In a press conference this afternoon in Wellington, ACC Minister Nikki Kaye proposed $500 million worth of ACC levy cuts. More>>

    Quakes: New Process For Red Zone Crown Offers

    Canterbury Earthquake Recovery Minister Gerry Brownlee has announced a process to give everyone a say on the Crown offers to owners of vacant, commercial/industrial and uninsured properties in the Residential Red Zone. More>>

    ALSO:

    Get More From Scoop

     

    LATEST HEADLINES

     
     
     
     
     
     
     
     
     
    Regional
    Search Scoop  
     
     
    Powered by Vodafone
    NZ independent news